When I disable napping on my G5 2.0 ghz double processor tower (rev 1) in Leopard, the fans go totally crazy when the machine goest to sleep. This was not an issue in Tiger.

So now I have to disable napping during wake to get rid of the damn chirping, and I re-able nap before sleep.

Kind of annoying but at least it works. I guess the fan chirping issue will never get solved.

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Sorry if this is not helpful, depending on your circumstances. I don't mean to gloat, but just to report that Apple will replace power supplies if the machine is still under warranty/AppleCare. When I politely resisted my subcontinental service rep's insistence that I shlep my G5 into an Apple Store, and instead proposed that he give me shipping information, he countered by scheduling a technician to come out to replace the PS at my home.

Best to all,
M.

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If a nation expects to be ignorant and free, in a state of civilization, it expects what never was and never will be. - Thomas Jefferson to Col. C. Yancey, 1816

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